18 results about "Silver colloid" patented technology

The utility model relates to the technical field of components, and discloses a combined bonding tool of a heat conduction component for a calorimeter, which comprises a constant-temperature heat sink, a positioning frame is fixedly mounted at the top of the constant-temperature heat sink, a mounting groove is formed in the top of the constant-temperature heat sink, and the positioning frame is fixedly mounted in the mounting groove. According to the combined bonding tool of the heat conduction component for the calorimeter, the limiting block is pressed downwards, the leather roller is made to be separated from the bottom of the hopper and attached to the interior of the mounting groove, at the moment, the leather roller rolls in the mounting groove, and the heat conduction component is bonded through the sample table. By means of the device, silver colloid flowing to the surface of the leather roller from the hopper can be evenly smeared in the installation groove, the silver colloid is evenly laid in the installation groove, it is guaranteed that the silver colloid at the bottom of the heat flow sensor is evenly smeared when the heat flow sensor is spliced and installed, follow-up bonding balance is not affected, and stable installation of the heat flow sensor is guaranteed.

The invention belongs to the technical field of electronic packaging materials, and particularly relates to silver colloid, a preparation method thereof and a semiconductor device. The silver colloid comprises silver particles, epoxy resin, a curing agent and a coupling agent; wherein the curing agent comprises phenolic resin and a thiol curing agent, and the thiol curing agent contains at least two sulfydryl groups. The sulfydryl of the thiol curing agent reacts with part of epoxy groups before phenolic hydroxyl groups of phenolic resin at a low temperature, a silver powder network is preliminarily stabilized through the bonding effect of the sulfydryl and the silver powder, and an initial cross-linked network with toughness is formed. After the temperature is continuously increased, the phenolic resin reacts with the remaining epoxy groups, and a main body curing reaction is started to construct a high-strength and high-crosslinking-density three-dimensional network, so that the structural strength and the heat resistance are improved. And the compact three-dimensional network can more stably wrap the silver powder particles stacked at high density, so that the quality of a conductive path under high silver content is ensured, and the mechanical bonding strength of an adhesive layer is remarkably improved.

The invention discloses an electronic paper segment code display module and a production method. The electronic paper segment code display module comprises a PET layer, an FPL electronic paper layer, a PS protection layer and flexible edge sealing glue. The FPL electronic paper layer and the PET layer are electrically communicated with an internal circuit through elargol; the FPL electronic paper layer is arranged on the PET layer; the PS protective layer is arranged on the FPL electronic paper layer; the flexible edge sealing adhesive surrounds a gap between the FPL electronic paper layer and the PS protection layer to prevent water vapor from entering the FPL electronic paper layer; and the FPL electronic paper layer comprises a segment code display part. Comprising the following steps: A10, dispensing silver colloid on circuit connection points on an FPL electronic paper layer; a20, the FPL electronic paper layer is attached to the PET layer; a30, the PS protection layer is attached to the FPL electronic paper layer; a40, flexible edge sealing glue is smeared in the gap between the FPL electronic paper layer and the PS protection layer; and A50, curing the flexible edge sealing glue.

The utility model discloses a novel thermopile sensor, which relates to the field of sensors and comprises a metal nickel-plated tube cap, a metal nickel-plated tube seat, a chip and a PCB (printed circuit board), an optical filter is arranged in a through hole in the top of the metal nickel-plated tube cap, a copper mesh layer is arranged in the surface of the PCB, and the PCB is attached to the top of the metal nickel-plated tube seat through epoxy glue; according to the utility model, the general metal nickel-plated tube cap and the specially designed PCB are adopted, the original connection mode is improved, the shielding net is arranged in the PCB, and silver colloid is used to enhance the conduction of the lead, so that the connection mode is more reliable, the production is convenient, the cost is reduced, and the production efficiency is improved. And the metal nickel-plated tube seat and the alloy welding wire are adopted, so that the production cost is reduced in conclusion.

The application discloses a preparation method of a rose-shaped silver powder with a Raman enhancement effect, and comprises the following steps: (1) preparing a silver nitrate solution, then adding aminoacetic acid into the silver nitrate solution to dissolve sufficiently to obtain a precursor solution; (2) preparing a reducing agent solution; then adding a dispersing agent and a buffer pair into the reducing agent solution to stir uniformly under heating to obtain a mixed solution of the reducing agent, the dispersing agent and the buffer pair; (3) under a light-proof environment at 22-26 DEG C, the precursor solution is added dropwise into the mixed solution of the reducing agent, the dispersing agent and the buffer pair while stirring, and after titration, the reaction is continued to obtain a silver colloid solution; and (4) the silver colloid solution is subjected to centrifugal separation, washing and drying in sequence to obtain the rose-shaped silver powder. The application has the advantages of simplicity, high efficiency, low cost and a large process window, and is beneficial to subsequent commercial mass production.

The utility model discloses a supporting seat for a Jacquard piezoelectric ceramic piece, which not only can accurately accommodate the piezoelectric ceramic piece, but also can effectively disperse the stress of the piezoelectric ceramic piece and provide an elastic piece leading-out device for supplying power to the piezoelectric ceramic piece through arranging a supporting groove with a wave-shaped cross section on a base, and can improve the supporting stability. The elastic pieces are limited and clamped through multiple points, the positive electrode and the negative electrode of the piezoelectric ceramic can be led out to the PCB through respective contact conductive contact pieces at the same time, the installation and conduction aspects are very simple, independent lead welding is not needed, or silver colloid is not needed for conducting filling of each point to achieve conduction, and the cost is reduced. It is ensured that the electric ceramic chip is firm and does not move in a high-frequency vibration or dynamic load environment, the mechanical fatigue or loosening risk is reduced, and a powerful guarantee is provided for long-acting stable operation of a system.

The utility model discloses a raincoat surface elargol spraying and drying device, which relates to the technical field of drying devices and comprises a base, a conveying mechanism is arranged on the inner side of the base, a spraying bin is fixedly connected to the top of the base, a controller is fixedly connected to the side wall of the spraying bin, and a flow guide pipe is arranged at the top of the spraying bin. The flow guide pipe is connected with an external feeding device, the end, located on the inner side of the spraying bin, of the flow guide pipe is fixedly connected with a flow distribution plate, the bottom of the flow distribution plate is fixedly connected with fifteen atomizing nozzles, the infrared generator array emits infrared rays to irradiate a raincoat sprayed with silver colloid, the infrared rays are converted into heat energy after being absorbed by the silver colloid, and the temperature of the silver colloid is increased; meanwhile, an air heater is started to blow hot air to the raincoat through an air guide pipe and a flow dividing pipe, the raincoat is rapidly dried in cooperation with an infrared drying mechanism, and the problems that an existing device is single in drying effect and low in drying efficiency are solved.

The production method of the electronic paper display module comprises the following steps of: B10, adding silver colloid on the circuit connection points on the TFT layer; the electronic paper display combination layer module is attached to the TFT layer; step B20, attaching a waterproof protective film layer to the electronic paper display combination layer module; b30, local curing of the elargol: carrying out local heating on the elargol part, and curing the elargol; b40, sealing a peripheral gap of the electronic paper display module by using UV edge sealing glue; b50, bubbles in the electronic paper display module are eliminated within the set temperature range, and the temperature range is larger than or equal to 20 DEG C and smaller than or equal to 30 DEG C; and step B60, irradiating by using ultraviolet light, and curing the UV edge sealing glue.

The utility model discloses a stirring device for a nano silver oxide solution preparation reaction kettle, and relates to the technical field of preparation of nano silver colloid aqueous solutions. The device comprises a reaction tank, three supporting lugs are fixedly connected to the outer surface of the reaction tank, supporting legs are fixedly connected to the bottoms of the three supporting lugs through screws, and a concentration pipe is fixedly connected to the bottom of the reaction tank. According to the utility model, the extension pipe is arranged, specifically, the motor is started, and the stirring fan blades rotate at the bottom in the reaction tank through the rotation of the output rod, so that a silver-ammonia solution and a sodium hydroxide solution are mixed to form a vortex, and then the center of the vortex is higher than the two sides; and two groups of fixing rings and a plurality of extension pipes are matched to enable autorotation stirring fan blades to autorotate at the high part of the vortex, so that the high part of the vortex is flapped, mixed and stirred, the reaction speed of a silver-ammonia solution and a sodium hydroxide solution can be increased, and the reaction capacity of the equipment is greatly improved.

The invention provides a packaging jig capable of reducing silver colloid climbing, and relates to the technical field of semiconductor packaging. An inner insertion beam frame is inserted into the outer fixed base, and the inner insertion beam frame is arranged outside the glue carrying inner groove in a sleeving manner; a glue flowing frame groove is formed in the inner insertion beam frame; a high leakage prevention groove is formed in the inner insertion beam frame, and the high leakage prevention groove is connected with the glue flowing frame groove; when a sizing material climbs to the position of a high leakage prevention groove, the excessive sizing material is leaked into a glue flowing frame groove through the high leakage prevention groove, flows into a solid gel groove under the action of an inclined rectangular through hole and falls asleep with the solidification of the sizing material, and the excessive sizing material is fixed in the solid gel groove, so that the sizing material is fixed; the problems that for a traditional packaging frame at present, the glue climbing risk of a thin chip to which glue is dispensed is large, the bonding strength between the frame and plastic packaging glue is low, and the glue climbing risk of the thin chip in the installation process is high are solved.

The utility model provides an environment-friendly packaging elargol cleaning device which comprises two cleaning pools, a pumping box and a collecting box are arranged between the two cleaning pools respectively, the outer side of the pumping box is fixedly connected with the outer side of the collecting box, the two ends of the cleaning pools are communicated with a liquid inlet pipe and a liquid outlet pipe respectively, the other end of the liquid outlet pipe is connected with a telescopic pipe in a sliding mode, and the telescopic pipe is connected with the pumping box. One side of the pumping box is respectively communicated with a first one-way valve and a second one-way valve, and one side of the collecting box is communicated with a steering pipe. According to the silver colloid cleaning device, the number of the cleaning pools, the number of the pumping boxes, the number of the collecting boxes and the like are increased, so that a cleaning agent during silver colloid cleaning is fully used, the environmental protection property of the whole cleaning device is improved, the silver colloid in liquid obtained after the cleaning agent is used can be filtered and collected through the arranged filter screen, and the cleaning agent can be reused conveniently.

The utility model provides a semiconductor packaging elargol uniform coating device which comprises a workbench, two lifting frames are connected to the two sides of the top end of the workbench in a sliding mode, a top frame is fixedly installed on the inner walls of the top ends of the two lifting frames, a plurality of adhesive storage pipes are connected to the inner side wall of the top frame in a sliding mode, and sealing pistons are connected to the inner side walls of the adhesive storage pipes in a sliding mode. The silver adhesive feeding device has the advantages that the adhesive storage pipe can be used for storage transition of silver adhesive, so that in the pumping process of the sealing piston, the silver adhesive can be conveyed into the adhesive storage pipe from the feeding pipe and then output to the bottom of the pressing plate from the output pipe to be output outwards; and the outer cover slides downwards along with the sealing piston under the action of the connecting rod and is in contact with the top of the semiconductor, and the part between the pressing plate and the outer cover can be filled with the silver colloid under the action of the pressing plate on the inner wall of the outer cover, so that the uniform coating of the semiconductor packaging silver colloid can be improved.

The utility model provides a multi-material composite glass ornament, which relates to the technical field of ornaments and comprises a glass substrate, a hollow cavity, a copper foil layer, a glass inlay, a wedge-shaped occlusion structure, a UV (ultraviolet) transfer printing sticking layer, a wire inlay metal frame and a nano-silver colloid buffer layer, the hollow cavity is connected with the copper foil layer coated on the glass inlay through a wedge-shaped occlusion structure, so that the stability of combination between the glass substrate and the glass inlay is improved; the nano-silver colloid buffer layer is arranged between the inner wall of the hollow cavity and the corresponding copper foil layer, so that the swelling amount generated by thermal expansion is buffered, and the cracking risk of a contact interface is reduced; the UV transfer printing pasting layers are arranged on the front side wall and the rear side wall of the glass inlay to increase colors and patterns, the side edges of the UV transfer printing pasting layers serve as a wire inlay metal frame fixing base body, the installation adhesive force of the wire inlay metal frame is improved, and the falling risk of the wire inlay metal frame is reduced.

The invention discloses a silver colloid diffusion preventing agent as well as a preparation method and application thereof. Wherein the elargol diffusion preventing agent comprises the following components in mass concentration: 100 to 500 mg / l of alkyl alkoxy silane, 50 to 250 mg / l of a first emulsifier, 50 to 250 mg / l of a second emulsifier, 5 to 10 mg / l of a cationic surfactant, a pH buffer solution and the balance of water; the cationic surfactant is polyhydroxy short-chain fluorine-containing quaternary ammonium salt, the first emulsifier is hydrophilic polyether silicone oil, and the second emulsifier is long-carbon-chain fatty acid polyoxyethylene. The elargol diffusion preventing agent prepared by the preparation method provided by the invention can effectively prevent diffusion of elargol, also has relatively high stability, and can be compatible and applicable to elargol diffusion preventing application of substrate boards made of different materials.

The invention relates to a carbon fiber composite preparation method and application, and relates to the technical field of carbon fiber composite materials. A preparation method of a carbon fiber composite material comprises the following steps that S1, at least two layers of carbon fiber prepreg are sequentially arranged from bottom to top, the length of the (N + 1) th layer is smaller than that of the Nth layer, and the two ends of the (N + 1) th layer and the two ends of the Nth layer in the length direction are of a stepped structure; s2, the surfaces of the stepped structures at the two ends of each layer of carbon fiber prepreg are coated with silver colloid, the silver colloid is covered with conductive metal, the conductive metal is connected with the wire, and an electrode is constructed; and S3, electrifying and heating the electrode to a set temperature, and curing and forming to prepare the carbon fiber composite material. The carbon fiber composite material is formed by self-heating and curing after being electrified, so that the temperature uniformity and the heating efficiency of an electrode area are improved. The contact resistance of the end of the prepreg is effectively reduced, scorching caused by overheating of the end area is avoided, and the uniformity of the overall temperature in the electric heating process is improved.

The present invention relates to a polydopamine / silver nanometer / graphene composite aerogel, a preparation method thereof and an application. The preparation method comprises the following steps: S1. Mix AgNO3, trisodium citrate and deionized water to obtain a silver colloid solution, centrifuge the silver colloid solution and discard the supernatant to obtain silver nanoparticles; S2. Prepare a graphene oxide solution by the Hummer method; S3. Mix the silver nanoparticles and the graphene oxide solution, ultrasonicate and perform a first stirring, adjust the pH to weakly acidic, add a dopamine hydrochloride solution, perform a second stirring in an oxygen-containing environment, carry out a reduction reaction, and finally elute, freeze and dry to obtain a polydopamine / silver nanometer / graphene composite aerogel. Compared with the prior art, the present invention promotes the polymerization of dopamine and the synthesis of reduced graphene oxide aerogel in a weak acid environment, and can also be used as a surface-enhanced Raman substrate. The aerogel structure is fluffy, the mechanical strength is improved, and the specific surface area is further increased.

The application provides a kind of silver telluride quantum dots and its preparation method, belongs to the field of nanometer materials.The preparation method of silver telluride quantum dots provided by the application includes the following steps: under the protection of inert gas, silver source, mercaptan, halogenated alkane, tellurium precursor and solvent are mixed, the synthesis of quantum dots is regulated by nucleophilic substitution reaction, and silver telluride colloidal quantum dots are obtained.The results of examples show that the preparation method provided by the application enhances the colloidal stability of quantum dots, and the fluorescence emission peak of silver telluride colloidal quantum dots is 1176-2023nm, with a wide fluorescence emission window.

The invention discloses a preparation method of an MX2 / MX2 heterojunction, which comprises the following steps of: cleaning a silicon wafer substrate and an MX2 crystal, adhering a 3M adhesive tape to the surface of the cleaned crystal, then tearing off the adhesive tape, repeating the operations of adhering and tearing off for many times, gradually reducing the number of layers of a two-dimensional material, then adhering and peeling off a thin sample on the adhesive tape by utilizing PDMS, and putting the thin sample under a microscope for observation, thereby obtaining the MX2 / MX2 heterojunction. Selecting MX2 with an ideal layer number and a graphite sample; transferring the sample of the PDMS with the sample to a cleaned substrate by using a transfer platform, and preparing an MX2 / MX2 heterojunction; carrying out annealing treatment on the heterojunction transferred to the substrate by using a vacuum annealing tube furnace; and putting the annealed substrate under an optical microscope, dripping silver colloid on the thin-layer graphite by using a micro-operation mechanical arm, connecting a copper wire for curing, dripping silver colloid at the bottom of the silicon wafer, connecting the copper wire and curing, successfully obtaining an MX2 heterojunction and realizing the preparation of a grid voltage regulated sample.